Construction method for acceleration test spectrum of vehicle-mounted equipment

Abstract

The invention provides a construction method for an acceleration test spectrum of vehicle-mounted equipment, and the method comprises the steps: obtaining the actual measurement vibration data of thevehicle-mounted equipment, and carrying out the primary selection of an actual measurement vibration data sample; performing data preprocessing such as singular point elimination, trend term elimination and the like on the preliminarily selected actually measured vibration data, performing data inspection, and judging whether the vibration process of the vehicle-mounted equipment meets the stability and each state duration or not; carrying out window processing on the finally determined actually measured vibration data, carrying out power spectral density estimation, and drawing a power spectral density curve graph of the vibration amplitude to the frequency when each actually measured speed is researched to form an actually measured spectrum; and determining an acceleration test acceleration factor, constructing an acceleration test spectrum of the vehicle-mounted equipment, and obtaining an acceleration test spectrum of the vehicle-mounted equipment. The vehicle-mounted equipment acceleration test spectrum constructed by the method is mainly suitable for determining vehicle-mounted electronic components such as a vehicle-mounted servo controller, a filling controller and the like, and an accurate and brand-new test spectrum construction method is provided for a vehicle-mounted equipment vibration test.

Description

Technical field [0001] The invention belongs to the technical field of vibration testing of vehicle-mounted equipment, and specifically relates to a method for constructing an accelerated test spectrum of vehicle-mounted equipment. Background technique [0002] Document CN106777578A provides a method for calculating periodic vibration test values ​​of airborne equipment vibration environment test. The steps include: obtaining the measured flight spectrum of the helicopter vibration environment under test; setting the number of truncation tests for the airborne equipment under test; The number of cut-off tests set by the airborne equipment is accelerated in time to obtain the vibration test value of the airborne equipment vibration environment test cycle. Although this method provides a new idea for the periodic vibration test value of the vibration environment test of the helicopter platform airborne equipment, it is not suitable for the vibration test of the vehicle-mounted equi...

AI Technical Summary

Problems solved by technology

Although this method provides a new idea for the periodic vibration test value of the vibration environment test of the on-board equipment of the helicopter platform, it is not suitable for the vibration test of the on-board equipment.

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